Pumice is the only rock that floats on water.
14
A person can live without food for about a month, but only about a week without water.
156
A portion of the water you drink has already been drunk by someone else, maybe several times over.
170
There are about 100,000 bacteria in one litre of drinking water.
63
The density of Saturn is so low that if you were to put it in a giant glass of water it would float.
219
By peeing in the shower, you can save 1,157 gallons of water a year.
31
Water is actually naturally blue.
48
Pure water (H2O) does not conduct electricity on its own.
46